342 Mr. T. D. A. Cockerell — Descriptions and 



A very Mehctn-\'\kQ genus, but with tlie venation of tlie 

 Eucerines and the hirg-e stio:ma of the Andrenids. In Ann. 

 & Mag. Nat. Hist., July 1902, p. 45, the affinities of Melecta 

 are discussed, and it is concluded that it is derived from tlie 

 Anthophorine series, and is especially related to the Euceriues 

 (Xenoghssa &c.). The genus now described would therefore 

 fall into the series as a primitive Melectine, retaining, how- 

 ever, the large stigma characteristic of lower groups. Among 

 the known fossil genera it has a rather close resemblance to 

 Lithajidrena, but the latter has not the Jle/ecta-Wke antennge 

 and the proportions of the submarginal cells are different. 

 Frotomelecta is no doubt a parasitic genus, but there is no 

 reason for supposing this of Lithandrena. 



Cadioi'i/s henguellensis, sp. n. 

 5. — Length about 16 mm.; anterior wing a little over 

 10 mm. 



Black, including the legs and tegulse, with dense snow- 

 white pubescence on cheeks, sides of face, upper part and 

 margins of pleura, &c. Hair on eyes only moderately long; 

 clypeus with white hair, no keel on it or the supraclypeal 

 region ; mesothorax and scutellum dull, with very dense 

 large punctures ; scutellum with no median tubercle, teeth at 

 its sides long, a little curved. Legs with white hair, but it 

 is orange-ferruginous on inner side of tarsi. Anterior wings 

 dark fuliginous, violaceous, hyaline at base ; hind wings 

 liyaline, with the apex broadly fuliginous. Abdomen 

 strongly and quite closely punctured, with linear white hair- 

 bands, broadening laterally; venter with three broad white 

 liair-bands, failing more or less in the middle ; margin of 

 penultimate ventral segment covered with white hair ; last 

 dorsal segment keeled about | of its length, its apex rather 

 blunt ; last ventral surpassing last dorsal by nearly a milli- 

 metre, narrow, with long fuscous hair on each margin and 

 %vith a little sharp tooth on each side a little beyond level of 

 apex of last dorsal ; penultimate ventral segment rough with 

 excessively minute punctures, giving way to larger ones at 

 the base. In Friese's table of African CGelioxys (' Arkiv for 

 Zoologi/ 1904) this runs to C. setosa, Friese, but differs from 

 that E. -African species in the colour of the hair on the 

 clypeus and apical segment of abdomen. In the structure of 

 the apex o£ the abdomen there is some analogy with C. elon- 

 gata, Lep.^ but the apex of the last ventral is very much 

 narrower than in that species, and the lateral teeth are not 

 nearly so near the apex. 



